Re: Operator is not unique

Doing a inner join with pg_proc I´ll get this result. So, none of this casts I´ve created. Column prorettype is different, this is the problem ? select format_type(castsource, NULL), format_type(casttarget, NULL), castfunc, castcontext, castmethod, pr.* from pg_cast inner join pg_proc pr on castfunc = pr.oid where (castsource = 'numeric'::regtype or castsource = 'bigint'::regtype) and format_type(casttarget, NULL) in ('numeric','bigint') order by castsource;

format_type	format_type	castfunc	castcontext	castmethod	proname	pronamespace	proowner	prolang	procost	prorows	provariadic	protransform	prokind	prosecdef	proleakproof	proisstrict	proretset	provolatile	proparallel	pronargs	pronargdefaults	prorettype	proargtypes	proallargtypes	proargmodes	proargnames	proargdefaults	protrftypes	prosrc	probin	proconfig	proacl
bigint	numeric	1781	i	f	numeric	11	10	12	1	0	0	-	f	false	false	true	false	i	s	1	0	1700	20	NULL	NULL	NULL	NULL	NULL	int8_numeric	NULL	NULL	NULL
numeric	bigint	1779	a	f	int8	11	10	12	1	0	0	-	f	false	false	true	false	i	s	1	0	20	1700	NULL	NULL	NULL	NULL	NULL	numeric_int8	NULL	NULL	NULL
numeric	numeric	1703	i	f	numeric	11	10	12	1	0	0	numeric_transform	f	false	false	true	false	i	s	2	0	1700	1700 23	NULL	NULL	NULL	NULL	NULL	numeric	NULL	NULL	NULL

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